榆 ⇒
榆树 Yúshù/yúshù, [榆樹], Yushu county level city in Changchun 長春|长春, Jilin, elm
榆 yú, elm
之桑榆
罔 ⇒
置若罔闻 zhìruòwǎngwén, [置若罔聞], to turn a deaf ear to (idiom); to pretend not to hear
罔 wǎng, [㒺], old variant of 罔[wǎng], to deceive/there is none/old variant of 網|网[wǎng]